@import './variables.css';

/* Modern CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-md);
}

h1 {
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-code-bg);
  padding: 0.2em 0.4em;
  border-radius: 0.25rem;
}

pre {
  background-color: var(--color-code-bg);
  padding: var(--space-md);
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin-bottom: var(--space-md);
}

pre code {
  background-color: transparent;
  padding: 0;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.content {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* Header */
.site-header {
  background-color: var(--color-header-bg);
  border-bottom: 1px solid var(--color-header-border);
  padding: var(--space-lg) 0;
  margin-bottom: var(--space-2xl);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.site-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin: 0;
}

.site-title a {
  color: var(--color-text);
}

.site-title a:hover {
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
}

nav a:hover {
  color: var(--color-text);
}

.github-link {
  display: flex;
  align-items: center;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.github-link:hover {
  color: var(--color-text);
  text-decoration: none;
}

.github-link svg {
  display: block;
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-sm) var(--space-md);
  cursor: pointer;
  color: var(--color-text);
  font-size: var(--font-size-lg);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  background-color: var(--color-bg-secondary);
}

/* Hero Section */
.hero {
  text-align: center;
  padding: var(--space-3xl) 0;
  margin-bottom: var(--space-2xl);
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero p {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

/* Main Content */
main {
  min-height: calc(100vh - 300px);
  margin-bottom: var(--space-3xl);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
  margin-top: var(--space-3xl);
  color: var(--color-text-secondary);
  text-align: center;
}

/* Blog Posts List */
.posts-list {
  display: grid;
  gap: var(--space-xl);
}

.post-card {
  padding: var(--space-xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.post-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-md);
}

.post-card h2 {
  margin-bottom: var(--space-sm);
}

.post-card h2 a {
  color: var(--color-text);
}

.post-card time {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.post-card .description {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.tags {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.tag {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background-color: var(--color-bg-secondary);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* Individual Post */
.post-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-xl);
  border-bottom: 1px solid var(--color-border);
}

.post-header h1 {
  margin-bottom: var(--space-md);
}

.post-header time {
  display: block;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.post-header .tags {
  justify-content: center;
}

.post-content {
  line-height: var(--line-height-relaxed);
}

.post-content h2 {
  margin-top: var(--space-2xl);
}

.post-content h3 {
  margin-top: var(--space-xl);
}

.post-content img {
  border-radius: var(--border-radius);
  margin: var(--space-xl) 0;
}

.post-content blockquote {
  border-left: 4px solid var(--color-accent);
  padding-left: var(--space-lg);
  margin: var(--space-xl) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* Responsive */
@media (max-width: 768px) {
  .site-header .container {
    flex-direction: column;
    text-align: center;
  }
  
  nav ul {
    flex-wrap: wrap;
    justify-content: center;
  }
  
  .hero {
    padding: var(--space-2xl) 0;
  }
  
  .post-card {
    padding: var(--space-lg);
  }
}

/* Modern enhancements */
@supports (container-type: inline-size) {
  .posts-list {
    container-type: inline-size;
  }
}

/* Smooth scrolling */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

/* Utility classes */
.text-secondary {
  color: var(--color-text-secondary);
}

.text-center {
  text-align: center;
}

.divider {
  margin: 3rem 0;
  border: none;
  border-top: 1px solid var(--color-border);
}

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-accent);
  color: white;
  padding: var(--space-sm) var(--space-md);
  text-decoration: none;
  z-index: 100;
}

.skip-to-content:focus {
  top: 0;
}

/* Syntax highlighting - using GitHub-style theme */
.post-content pre code {
  display: block;
  overflow-x: auto;
}

.post-content pre code.hljs {
  padding: var(--space-md);
}

/* Code highlighting will be done by highlight.js */

/* Post Card with Image Support */
.post-card {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  overflow: hidden;
}

.post-card-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-bg-secondary);
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.post-card:hover .post-card-image img {
  transform: scale(1.05);
}

.post-card-content {
  padding: var(--space-xl);
  flex: 1;
}

.post-card-content h2 {
  margin-bottom: var(--space-sm);
}

.post-card-content time {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.post-card-content .description {
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.post-card-content .excerpt {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-md);
  font-size: var(--font-size-base);
}

.post-card-content .tags {
  margin-top: var(--space-md);
}

/* Hero Image for Individual Posts */
.post-hero-image {
  width: 100%;
  max-width: 800px;
  margin: 0 auto var(--space-2xl);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--border-radius-lg);
  background-color: var(--color-bg-secondary);
}

.post-hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Responsive adjustments for cards with images */
@media (max-width: 768px) {
  .post-card-content {
    padding: var(--space-lg);
  }
  
  .post-card-image {
    aspect-ratio: 16 / 10;
  }
  
  .post-hero-image {
    aspect-ratio: 16 / 10;
  }
}

/* Card without image (fallback) */
.post-card:not(:has(.post-card-image)) {
  padding: var(--space-xl);
}

.post-card:not(:has(.post-card-image)) .post-card-content {
  padding: 0;
}

@media (max-width: 768px) {
  .post-card:not(:has(.post-card-image)) {
    padding: var(--space-lg);
  }
}

/* Breadcrumb Navigation */
.breadcrumb {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) 0;
}

.breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb span {
  color: var(--color-text-secondary);
}